High Strain-rate Dynamic Compressive Behavior and Energy Absorption of Distiller’s Dried Grains and Soluble Composites with Paulownia and Pine Wood Using a Split Hopkinson Pressure Bar Technique

Damian Stoddard, Suman Babu Ukyam, Brent Tisserat, Ivy Turner, Rowan Baird, Sofia Serafin, Jose Torrado, Birendra Chaudhary, Alex Piazza, Mason Tudor, Arunachalam M. Rajendaran

Abstract


Novel bio-based composite wood panels (CWPs) that consisted of distiller’s dried grains and solubles (DDGS) flour adhesive bound to a wood filler/reinforcement were subjected to high strain-rate compression loading, and their behavior was investigated. Specimens of DDGS-Paulownia wood (PW) or DDGS-pinewood (Pine) composites made using DDGS with fractions of 10%, 15%, 25%, and 50% were tested at high strain-rates using a modified compression Split Hopkinson Pressure Bar (SHPB). Both DDGS-PW and DDGS-Pine composites displayed strain-rate sensitivity, and DDGS-PW had a 25% fraction, which showed the highest ultimate compressive strength of 655 MPa at approximately 1600/s. The 90%-PW had the highest specific energy of 19.24 kJ/kg at approximately 1600/s when loaded via dynamic compression. The CWPs constructed of DDGS-PW had higher strength and energy absorption than DDGS-Pine with the exception of the 50% DDGS composites.

Keywords


Bio-based adhesive; Dried Distiller’s Grain and Solubles (DDGS); Engineered wood composite; Split Hopkinson Pressure Bar (SHPB); Energy Absorption; Paulownia wood (PW); Pinewood (Pine)

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